83989670 has 8 divisors (see below), whose sum is σ = 151181424. Its totient is φ = 33595864.

The previous prime is 83989669. The next prime is 83989679. The reversal of 83989670 is 7698938.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83989679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4199474 + ... + 4199493.

It is an arithmetic number, because the mean of its divisors is an integer number (18897678).

Almost surely, 2^83989670 is an apocalyptic number.

83989670 is a deficient number, since it is larger than the sum of its proper divisors (67191754).

83989670 is a wasteful number, since it uses less digits than its factorization.

83989670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8398974.

The product of its (nonzero) digits is 653184, while the sum is 50.

The square root of 83989670 is about 9164.5878248833. The cubic root of 83989670 is about 437.9339607002.

It can be divided in two parts, 839 and 89670, that added together give a palindrome (90509).

The spelling of 83989670 in words is "eighty-three million, nine hundred eighty-nine thousand, six hundred seventy".